United States
| Month | Max. | Min. | Avg. | ||
|---|---|---|---|---|---|
| January | 18°C | -13°C | 5.2°C | 78% |
0.1 mm |
| February | 20°C | -6°C | 6.1°C | 78.1% |
0.1 mm |
| March | 27°C | -1°C | 9°C | 73.8% |
0.1 mm |
| April | 26°C | 2°C | 11.7°C | 61.6% |
0.1 mm |
| May | 32°C | 3°C | 14.8°C | 60.6% |
0 mm |
| June | 38°C | 5°C | 18.6°C | 60% |
0 mm |
| July | 39°C | 9°C | 22.2°C | 54.5% |
0 mm |
| August | 41°C | 9°C | 23.7°C | 58.4% |
0 mm |
| September | 38°C | 8°C | 20.4°C | 64.7% |
0 mm |
| October | 31°C | 2°C | 13.2°C | 76% |
0.1 mm |
| November | 19°C | -1°C | 9.3°C | 85.2% |
0.2 mm |
| December | 18°C | -1°C | 7.6°C | 83.7% |
0.2 mm |
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